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前人的研究业已表明,在一般情况下,铵态氮肥较适合于水田作物(水稻),硝态氮肥则更适合于旱地作物(包括蔬菜)。但是,据国外研究,此两种氮肥按一定比例混合施用对作物的生长更为有利。本文研究了铵态氮肥和硝态氮肥混合施用比例对萝卜和芹菜产量的影响。一、试验方法试验是在盆钵中进行的。供试土壤为菜园土(有机质含量为2.60％;pH7.5)。试验分5个处理,重复5次。各处理的施肥状况列于表1。
Previous studies have shown that under normal circumstances ammonium nitrogen fertilizer is more suitable for paddy field crops (rice), nitrate nitrogen fertilizer is more suitable for dry land crops (including vegetables). However, according to foreign studies, the two nitrogenous fertilizers applied in a certain ratio are more advantageous to crop growth. In this paper, the effects of the mixture ratio of ammonium nitrogen fertilizer and nitrate nitrogen fertilizer on the yield of radish and celery were studied. First, the test method The test is carried out in the pot. Soil for the test garden soil (organic matter content of 2.60%; pH7.5). The experiment was divided into 5 treatments and repeated 5 times. The fertilization status of each treatment is shown in Table 1.